Finding the Fourth Proportional to 743,153.24, 1,025,517.17 and 420,865.65
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Solution
The fourth proportional to 743,153.24, 1,025,517.17 and 420,865.65 is: 580,775.17
Step by Step Solution
- Step 1: Write the proportion equation
743,153.24 : 1,025,517.17 = 420,865.65 : x - Step 2: Convert to fraction form
743,153.24/1,025,517.17 = 420,865.65/x - Step 3: Cross multiply
743,153.24x = 1,025,517.17 × 420,865.65 - Step 4: Simplify right side
743,153.24x = 431,604,951,390.38 - Step 5: Solve for x
x = 431,604,951,390.38/743,153.24 - Step 6: Final answer
x = 580,775.17
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.